package com.tawl.generator.controller;

import com.alibaba.druid.DbType;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlCreateTableStatement;
import com.tawl.common.annotation.Log;
import com.tawl.common.core.controller.BaseController;
import com.tawl.common.core.domain.AjaxResult;
import com.tawl.common.core.page.TableDataInfo;
import com.tawl.common.core.text.Convert;
import com.tawl.common.enums.BusinessType;
import com.tawl.common.utils.SecurityUtils;
import com.tawl.common.utils.sql.SqlUtil;
import com.tawl.generator.config.GenConfig;
import com.tawl.generator.domain.GenTable;
import com.tawl.generator.domain.GenTableColumn;
import com.tawl.generator.service.IGenTableColumnService;
import com.tawl.generator.service.IGenTableService;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 代码生成 操作处理
 *
 * @author tongai
 */
@RestController
@RequestMapping("/tool/gen")
public class GenController extends BaseController {
  @Autowired
  private IGenTableService genTableService;

  @Autowired
  private IGenTableColumnService genTableColumnService;

  /**
   * 查询代码生成列表
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:list')")
  @GetMapping("/list")
  public TableDataInfo genList(GenTable genTable) {
    startPage();
    List<GenTable> list = genTableService.selectGenTableList(genTable);
    return getDataTable(list);
  }

  /**
   * 修改代码生成信息
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:query')")
  @GetMapping(value = "/{tableId}")
  public AjaxResult getInfo(@PathVariable Long tableId) {
    GenTable table = genTableService.selectGenTableById(tableId);
    List<GenTable> tables = genTableService.selectGenTableAll();
    List<GenTableColumn> list = genTableColumnService.selectGenTableColumnListByTableId(tableId);
    Map<String, Object> map = new HashMap<String, Object>();
    map.put("info", table);
    map.put("rows", list);
    map.put("tables", tables);
    return success(map);
  }

  /**
   * 查询数据库列表
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:list')")
  @GetMapping("/db/list")
  public TableDataInfo dataList(GenTable genTable) {
    startPage();
    List<GenTable> list = genTableService.selectDbTableList(genTable);
    return getDataTable(list);
  }

  /**
   * 查询数据表字段列表
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:list')")
  @GetMapping(value = "/column/{tableId}")
  public TableDataInfo columnList(Long tableId) {
    TableDataInfo dataInfo = new TableDataInfo();
    List<GenTableColumn> list = genTableColumnService.selectGenTableColumnListByTableId(tableId);
    dataInfo.setRows(list);
    dataInfo.setTotal(list.size());
    return dataInfo;
  }

  /**
   * 导入表结构（保存）
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:import')")
  @Log(title = "代码生成", businessType = BusinessType.IMPORT)
  @PostMapping("/importTable")
  public AjaxResult importTableSave(String tables) {
    String[] tableNames = Convert.toStrArray(tables);
    // 查询表信息
    List<GenTable> tableList = genTableService.selectDbTableListByNames(tableNames);
    genTableService.importGenTable(tableList, SecurityUtils.getUsername());
    return success();
  }

  /**
   * 创建表结构（保存）
   */
  @PreAuthorize("@ss.hasRole('admin')")
  @Log(title = "创建表", businessType = BusinessType.OTHER)
  @PostMapping("/createTable")
  public AjaxResult createTableSave(String sql) {
    try {
      SqlUtil.filterKeyword(sql);
      List<SQLStatement> sqlStatements = SQLUtils.parseStatements(sql, DbType.mysql);
      List<String> tableNames = new ArrayList<>();
      for (SQLStatement sqlStatement : sqlStatements) {
        if (sqlStatement instanceof MySqlCreateTableStatement) {
          MySqlCreateTableStatement createTableStatement = (MySqlCreateTableStatement) sqlStatement;
          if (genTableService.createTable(createTableStatement.toString())) {
            String tableName = createTableStatement.getTableName().replaceAll("`", "");
            tableNames.add(tableName);
          }
        }
      }
      List<GenTable> tableList = genTableService.selectDbTableListByNames(tableNames.toArray(new String[tableNames.size()]));
      String operName = SecurityUtils.getUsername();
      genTableService.importGenTable(tableList, operName);
      return AjaxResult.success();
    } catch (Exception e) {
      logger.error(e.getMessage(), e);
      return AjaxResult.error("创建表结构异常");
    }
  }

  /**
   * 修改保存代码生成信息
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:edit')")
  @Log(title = "代码生成", businessType = BusinessType.UPDATE)
  @PutMapping
  public AjaxResult editSave(@Validated @RequestBody GenTable genTable) {
    genTableService.validateEdit(genTable);
    genTableService.updateGenTable(genTable);
    return success();
  }

  /**
   * 删除代码生成
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:remove')")
  @Log(title = "代码生成", businessType = BusinessType.DELETE)
  @DeleteMapping("/{tableIds}")
  public AjaxResult remove(@PathVariable Long[] tableIds) {
    genTableService.deleteGenTableByIds(tableIds);
    return success();
  }

  /**
   * 预览代码
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:preview')")
  @GetMapping("/preview/{tableId}")
  public AjaxResult preview(@PathVariable("tableId") Long tableId) throws IOException {
    Map<String, String> dataMap = genTableService.previewCode(tableId);
    return success(dataMap);
  }

  /**
   * 生成代码（下载方式）
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:code')")
  @Log(title = "代码生成", businessType = BusinessType.GENCODE)
  @GetMapping("/download/{tableName}")
  public void download(HttpServletResponse response, @PathVariable("tableName") String tableName) throws IOException {
    byte[] data = genTableService.downloadCode(tableName);
    genCode(response, data);
  }

  /**
   * 生成代码（自定义路径）
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:code')")
  @Log(title = "代码生成", businessType = BusinessType.GENCODE)
  @GetMapping("/genCode/{tableName}")
  public AjaxResult genCode(@PathVariable("tableName") String tableName) {
    if (!GenConfig.isAllowOverwrite())
    {
      return AjaxResult.error("【系统预设】不允许生成文件覆盖到本地");
    }
    genTableService.generatorCode(tableName);
    return success();
  }

  /**
   * 同步数据库
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:edit')")
  @Log(title = "代码生成", businessType = BusinessType.UPDATE)
  @GetMapping("/synchDb/{tableName}")
  public AjaxResult synchDb(@PathVariable("tableName") String tableName) {
    genTableService.synchDb(tableName);
    return success();
  }

  /**
   * 批量生成代码
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:code')")
  @Log(title = "代码生成", businessType = BusinessType.GENCODE)
  @GetMapping("/batchGenCode")
  public void batchGenCode(HttpServletResponse response, String tables) throws IOException {
    String[] tableNames = Convert.toStrArray(tables);
    byte[] data = genTableService.downloadCode(tableNames);
    genCode(response, data);
  }

  /**
   * 生成zip文件
   */
  private void genCode(HttpServletResponse response, byte[] data) throws IOException {
    response.reset();
    response.addHeader("Access-Control-Allow-Origin", "*");
    response.addHeader("Access-Control-Expose-Headers", "Content-Disposition");
    response.setHeader("Content-Disposition", "attachment; filename=\"tongai.zip\"");
    response.addHeader("Content-Length", "" + data.length);
    response.setContentType("application/octet-stream; charset=UTF-8");
    IOUtils.write(data, response.getOutputStream());
  }

  /**
   * 生成菜单
   */
  @PreAuthorize("@ss.hasPermi('tool:gen:code')")
  @Log(title = "代码生成", businessType = BusinessType.UPDATE)
  @GetMapping("/addMenu/{tableId}")
  public AjaxResult addMenu(@PathVariable("tableId") Long tableId) {
    genTableService.addMenu(tableId);
    return success("生成成功，即将刷新页面！");
  }
}